Bryston square series question ...

I understand there was an update to the Bryston square series amplifiers ... version 1 and 2.

The question is, if you have a version 1, will Bryston update it to version 2 free of charge? I KNOW I can contact Bryston but only in early investigation stage for a SS amp so just curious. I'm specifically interested in the 28bsst model.

Thanks!